South Dakota’s three largest classes of high school football teams were in action Thursday  in playoff games.

Class 11AAA
Quarterfinal

Brandon Valley 58, Rapid City Central 14

Sioux Falls O’Gorman 38, Aberdeen Central 0

Sioux Falls Roosevelt 53, Sioux Falls Lincoln 21

Sioux Falls Washington 53, Rapid City Stevens 27

Class 11AA
Quarterfinal

Harrisburg 53, Yankton 15

Mitchell 79, Sturgis Brown 22

Pierre 35, Douglas 7

Spearfish 47, Huron 19

Class 11A
Quarterfinal

Dell Rapids 35, Sioux Falls Christian 18

Madison 43, Milbank Area 0

St. Thomas More 33, Hot Springs 7

Tea Area 14, West Central 6